watchOS 5.2.1 (16U5091b) for Apple Watch Series 4 (40mm, LTE) ✗ This OTA is not signed. OTA firmwares cannot be restored to. IPSW Downloads collects them for
potential future use. They might also be useful if you're doing research.
Release Date April 8, 2019 Upload Date April 4, 2019 Filename ed361291669056a5b560b9cb7549d994e82b569c.zip Filesize 1.4 GiB Identifier Watch4,3
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